DK108398C - Electric tone frequency signaling system. - Google Patents

Electric tone frequency signaling system.

Info

Publication number
DK108398C
DK108398C DK308859AA DK308859A DK108398C DK 108398 C DK108398 C DK 108398C DK 308859A A DK308859A A DK 308859AA DK 308859 A DK308859 A DK 308859A DK 108398 C DK108398 C DK 108398C
Authority
DK
Denmark
Prior art keywords
signaling system
tone frequency
frequency signaling
electric tone
electric
Prior art date
Application number
DK308859AA
Other languages
Danish (da)
Original Assignee
Int Standard Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Int Standard Electric Corp filed Critical Int Standard Electric Corp
Application granted granted Critical
Publication of DK108398C publication Critical patent/DK108398C/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/50—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
    • H04Q1/4465—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency the same frequency being used for all signalling information, e.g. A.C. nr.9 system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
DK308859AA 1958-09-03 1959-08-31 Electric tone frequency signaling system. DK108398C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL231054 1958-09-03

Publications (1)

Publication Number Publication Date
DK108398C true DK108398C (en) 1967-12-04

Family

ID=19751331

Family Applications (1)

Application Number Title Priority Date Filing Date
DK308859AA DK108398C (en) 1958-09-03 1959-08-31 Electric tone frequency signaling system.

Country Status (6)

Country Link
US (1) US3140358A (en)
BE (1) BE582243R (en)
CH (1) CH379584A (en)
DE (1) DE1102817B (en)
DK (1) DK108398C (en)
FR (1) FR1238493A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3187107A (en) * 1960-03-04 1965-06-01 Int Standard Electric Corp Voice-frequency key-dialing subscriber's station
DE1185665B (en) * 1963-09-14 1965-01-21 Standard Elektrik Lorenz Ag Key-operated multi-frequency tone generator
DE2162898A1 (en) * 1971-06-22 1972-12-28 Sits Soc It Telecom Siemens Circuit arrangement for identifying direct current signals in a telephone system with key dialing
US4495485A (en) * 1980-12-12 1985-01-22 General Electric Company Touch control arrangement for data entry
US4817010A (en) * 1987-03-02 1989-03-28 Mars Incorporated Vending machine control with improved vendor selector switch detection and decoding apparatus

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2554201A (en) * 1946-06-19 1951-05-22 Ericsson Telefon Ab L M Key-sending automatic telephone signaling system
US2470145A (en) * 1947-09-25 1949-05-17 American Telephone & Telegraph Multifrequency signaling system
NL81161C (en) * 1950-07-21
NL96910C (en) * 1954-10-25
DE1050832B (en) * 1956-06-07 1959-02-19
NL100359C (en) * 1957-03-14
US2897451A (en) * 1958-02-27 1959-07-28 Robert B Hammett Multifrequency devices and systems associated therewith
US3011028A (en) * 1958-05-07 1961-11-28 Leich Electric Co Signaling system

Also Published As

Publication number Publication date
US3140358A (en) 1964-07-07
DE1102817B (en) 1961-03-23
FR1238493A (en) 1960-12-02
BE582243R (en) 1960-03-02
CH379584A (en) 1964-07-15

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